Stirling Moss won the 1955 Mille Miglia in a 300 SLR with an average speed of 157.65 km/h (97.96 mph) over 1,600 km (990 mi). He was assisted by his co-driver Denis Jenkinson, a British motor-racing journalist, who informed him with previously taken notes, ancestors to the pacenotes used in modern rallying. Juan Manuel Fangio was second in a sister car.